We present a theoretical study on the orbital magnetism in multilayer graphenes within the effective mass approximation. The Hamiltonian and thus susceptibility can be decomposed into contributions from subsystems equivalent to monolayer or bilayer graphene. The monolayer-type subband exists only in odd layers and exhibits a delta-function susceptibility at εF =0. The bilayer-type subband appearing in every layer number gives a singular structure in the vicinity of εF =0 due to the trigonal warping as well as a logarithmic tail away from εF =0. The integral of the susceptibility over energy is approximately given only by the layer number.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2007 Aug 17|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics